<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // let uname = prompt('请输入你的姓名');
        // let age = prompt(`请输入你的年龄`);
        // document.write(`大家好，我是` + uname + "今年" + age + '岁了');

        let num1 = prompt('请输入第一个数字'), num2 = prompt('请输入第二个数字');
        document.write("和为：", parseFloat(num1) + parseFloat(num2));
    </script>
</body>

</html>